WE

William Henry Elfring

📍 Philadelphia, PA: #2,553 of 4,834 inventorsTop 55%
🗺 Pennsylvania: #43,221 of 74,527 inventorsTop 60%
Overall (All Time): #3,494,776 of 4,157,543Top 85%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6815010 Method of inhibiting the loss of solar reflectance over time of an exterior elastomeric Donald A. Winey 2004-11-09